/*
    This file is part of Sylvan.
    Copyright (C) 2008-2018 Cute Chess authors
    Copyright (C) 2019 Wilbert Lee

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Sylvan.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <QFileDialog>
#include <QToolButton>
#include <QResizeEvent>

#include "pathlineedit.h"

PathLineEdit::PathLineEdit(PathType pathType, QWidget* parent)
    : QLineEdit(parent),
      m_pathType(pathType)
{
    m_browseBtn = new QToolButton(this);
    m_browseBtn->setText("...");

    // Focus must stay on the QLineEdit, otherwise the editor
    // will be closed prematurely
    m_browseBtn->setCursor(Qt::ArrowCursor);
    m_browseBtn->setFocusPolicy(Qt::NoFocus);

    connect(m_browseBtn, SIGNAL(clicked()), this, SLOT(browse()));
}

PathLineEdit::~PathLineEdit()
{
}

void PathLineEdit::setDefaultDirectory(const QString& dir)
{
    m_defaultDir.setPath(dir);
}

void PathLineEdit::resizeEvent(QResizeEvent* event)
{
    int height = event->size().height();

    // Place the browse button to the right
    setContentsMargins(0, 0, height, 0);
    m_browseBtn->resize(height, height);
    m_browseBtn->move(width() - height, 0);
}

void PathLineEdit::setPath(const QString& path)
{
    QString finalPath(path);
    if (!path.isEmpty() && m_defaultDir.exists())
    {
        QString tmp = m_defaultDir.relativeFilePath(path);
        if (!tmp.startsWith(".."))
            finalPath = tmp;
    }

    if (!finalPath.isEmpty())
        setText(finalPath);
}

void PathLineEdit::browse()
{
    auto dlg = new QFileDialog(this);
    dlg->setAttribute(Qt::WA_DeleteOnClose);
    dlg->setAcceptMode(QFileDialog::AcceptOpen);

    connect(dlg, &QFileDialog::fileSelected,
            this, &PathLineEdit::setPath);

    if (m_pathType == FilePath)
    {
        dlg->setFileMode(QFileDialog::AnyFile);
    }
    else
    {
        dlg->setFileMode(QFileDialog::Directory);
        dlg->setOption(QFileDialog::ShowDirsOnly);
    }

    if (m_defaultDir.exists())
        dlg->setDirectory(m_defaultDir);

    dlg->setWindowModality(Qt::WindowModal);
    dlg->open();
}
